Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thoi ki hoc snippets" » "thoi ky hoc snippets", "thoi dai hoc snippets", "thoi khi hoc snippets", "thoi li hoc snippets", "thoi vi hoc snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("thoi ki hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thoi ki hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thoi ki hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thoi ki hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.